UK Butterfly Trends, 2026 Release, Data to 2025
Summary
The Joint Nature Conservation Committee released official statistics on UK butterfly population trends based on data from the UK Butterfly Monitoring Scheme through 2025. The statistics are presented at UK level and country level where sufficient data exist. The UKBMS is organized and funded by Butterfly Conservation, the UK Centre for Ecology and Hydrology, British Trust for Ornithology, and JNCC, and relies on volunteer data contributors.
What changed
JNCC published its annual point-of-first-release statistics for UK butterfly abundance, covering data through 2025. The statistics are derived from the UK Butterfly Monitoring Scheme, which monitors population indices for butterfly species across the UK. Results are presented at national and country level where sample sizes permit. The scheme helps implement and report on country biodiversity strategies and feeds into biodiversity indicators.
This release is informational and does not create compliance obligations for any regulated entities. It provides baseline environmental data used by conservation organizations, researchers, and government bodies for biodiversity assessment and reporting purposes.
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Apr 16, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Official Statistics
Point of first release for statistics on abundance of UK butterflies (2026 publication; includes data up to 2025)
Trends of population indices for UK butterflies.
From: Joint Nature Conservation Committee Published 27 March 2026 Get emails about this page
Documents
Point of first release for statistics on abundance of UK butterflies (2026 publication; includes data up to 2025)
https://jncc.gov.uk/our-work/official-statistics-on-abundance-of-uk-butterflies/
Details
Trends of UK butterfly species are based on results of the UK Butterfly Monitoring Scheme (UKBMS), presented at UK level, and at country level where there are sufficient data. The UKBMS helps the UK to implement or report on country biodiversity strategies and feed into biodiversity indicators.
The UK Butterfly Monitoring Scheme is organized and funded by Butterfly Conservation, the UK Centre for Ecology and Hydrology, British Trust for Ornithology, and the Joint Nature Conservation Committee. The UKBMS is indebted to all volunteers who contribute data to the scheme.
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Published 27 March 2026
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